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Immunofluorescence of B. forsythus cells. B. forsythus cells were incubated with rabbit anti-rBsp-70 serum (B) or preimmune rabbit serum (A), followed by goat anti-rabbit IgG coupled to fluorescein isothiocyanate. Cells reacted with the anti-rBsp70 antibody show positive fluorescence. Original magnification, ×425.
